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Finding the Fourth Proportional to 18,168.99, 27,238.89 and 10,266.63

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Solution

The fourth proportional to 18,168.99, 27,238.89 and 10,266.63 is: 15,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.99 : 27,238.89 = 10,266.63 : x
  2. Step 2: Convert to fraction form
    18,168.99/27,238.89 = 10,266.63/x
  3. Step 3: Cross multiply
    18,168.99x = 27,238.89 × 10,266.63
  4. Step 4: Simplify right side
    18,168.99x = 279,651,541.59
  5. Step 5: Solve for x
    x = 279,651,541.59/18,168.99
  6. Step 6: Final answer
    x = 15,391.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.